The IRS treats USDT and other crypto assets as “property,” not currency. That means every time you swipe your USDT card to buy a coffee, pay for a ChatGPT Plus subscription, or fill up your tank, the IRS breaks the transaction into two steps: first selling USDT for USD, then spending the USD. Step one is a taxable capital gain or loss event.
Even though USDT is pegged to $1 and the price difference is usually tiny, a small difference does not mean no reporting obligation. The requirement to report is tied to whether a disposal occurred, not to the size of the gain.
1. Every Purchase Goes on Form 8949
Form 8949 is the IRS form for reporting capital asset disposals line by line. Here is how to fill it in for USDT card purchases:
- Date acquired: the date you originally purchased this batch of USDT
- Date sold: the date of the card transaction
- Proceeds: the USD value of the USDT at the moment of the transaction
- Cost basis: what you originally paid for this USDT, including fees
- Gain/Loss: Proceeds minus Cost basis
Assets held longer than one year qualify for long-term capital gains rates (0% / 15% / 20%); assets held one year or less are taxed as short-term gains at ordinary income rates. Totals are then carried over to Schedule D.
If you make hundreds of card transactions in a year, filling this in by hand is nearly impossible. Most US cardholders use tools like CoinTracker, Koinly, or TokenTax to import records from exchanges and card issuers and auto-generate a Form 8949 PDF.
2. How to Calculate Cost Basis — Three Methods
IRS-permitted cost basis accounting methods:
- FIFO (First In, First Out): the default method — the oldest USDT you purchased is treated as spent first
- Specific Identification: you must be able to prove which specific purchase lot corresponds to each spend
- HIFO (Highest In, First Out): a variant of Specific ID, commonly used to legally minimize recognized gains
Starting with the 2026 tax year, the IRS requires per-wallet cost basis tracking — you can no longer merge FIFO calculations across accounts. In practice: USDT purchased on Coinbase cannot share a cost basis with USDT purchased on Kraken.
3. 1099-B: Issued by US-Licensed Card Providers
If you use a US-licensed product such as Coinbase Card, Crypto.com Visa, or BitPay Card, the issuer or affiliated exchange will generally send a 1099-B (or the new 1099-DA, which is gradually replacing it starting with the 2026 tax year) by late January of the following year, with a copy sent directly to the IRS.
Important notes:
- A 1099-B cannot be copied directly onto your 1040 — it is a source document for reconciliation purposes; you must still enter the data into Form 8949
- Overseas issuers (such as products routed through Hong Kong, Macau, or Southeast Asia) will not send a 1099-B, but your filing obligation remains unchanged
- Overseas crypto accounts above certain thresholds also trigger FBAR / FATCA disclosure requirements — a separate set of obligations independent of income tax
4. Two Commonly Overlooked Pitfalls
The nature of cashback rewards: Crypto cashback issued by USDT cards is generally treated by the IRS as a rebate or discount rather than taxable income — however, the fair market value at the time of receipt becomes the cost basis for that crypto, and any subsequent sale or spend will still generate a reportable gain.
Staking / locking assets for higher tiers: Some cards require you to stake platform tokens to unlock better cashback tiers. Rewards earned from staking are ordinary income, recognized at fair market value on the day received. This runs on a separate tax track from card spending.
Editorial Recommendations
Do: Start exporting CSVs from your exchange and card issuer from day one and connect a crypto tax software tool. Reconstructing a full year of records in April is genuinely painful.
Don’t: Do not skip Form 8949 on the assumption that “USDT is a stablecoin and the gain is basically zero.” The IRS cares whether you filed, not how large the amount is. Penalties and interest for unreported disposals can easily exceed the underlying tax owed.
Further reading: US USDT Card Compliance Overview · Risks of No-KYC Cards · What Is a U Card.